I have a 77 (supposedly). I have a fuel door on driver's side, but just the gas cap on the passenger, no recessed fuel door.
I ordered the 77 fuel necks and hoses from LMC when I replaced both my tanks. The passenger worked perfectly - the driver side I had to cut in half and extend with a piece of pipe and hose clamps, and it doesn't have enough pitch - I have to fill with the nozzle slowly or it clicks itself off